There was definitely no shortage of food in Wang Mansion. The prince could have had the servants bring him untouched dishes, yet he still chose to do so. Coupled with the fact that Yang Mei didn't seem surprised at all, this suggested that Prince Rui did not mind eating the leftovers of the princess, and that this wasn't a recent development.
What significance does something like this hold in a society where men are valued above women?
It signifies that in Prince Rui's heart, he and the princess are equals, or perhaps, indistinguishable from each other.
After Xiao'er finished her meal, the contractions returned causing her to unintentionally furrow her brows.
As Xiao'er made no sound, everyone mistakenly assumed that Xiao'er was not in much pain. Only Shangguan Xuanyi knew that Xiao'er must be in extreme pain; she wouldn't even furrow her brows otherwise.